Mold-forming device



6. A. HAUSHERR MOLD FORMING DEVICE Filed June 26, 1925 Nov. 24, 1925- 2Sheets-Sheet 1 INVENTOR l lfiaa$hfjli ATTORNEYS J WITNESSES Nov. 24,1925- 1,563,189 G. A. HAUSHERR MOLD FORMING DEVICE Filed June 26, 1925 2Sheets-Sheet 2 WITNESSES INVENTOR A TTOHIVEFS Patented Nov. 24, 1925.

UNITED STATES GUSTAV A. HAUSHERR, 0F BAYVILLE, NEW JERSEY.

MOLD-FORMING DEVICE.

Application filed. June 26, 1925.

To all whom it may concern:

Be it'known that I, GUSTAV A. HAUSI-IERB, a citizen of the UnitedStates, and a resident of Bayville, in the county of Ocean and State ofNew Jersey, have invented a new and Improved Mold-Forming Device, ofwhich the following is a full, clear, and exact description. v

The present invention relates to new and useful improvements in molds,and it pertains more particularly to molds for casting precious metal,such, for example, as articles of jewelry from gold and the like.

It is one of the primary objects of the invention to provide a new andimproved form of sand mold in which the cast or finished articles willhave a smooth appearance.

Heretofore articles of jewelry have been cast in sand molds but so faras known this method has been abolished for the reason that the finishedarticles are pitted to an extent which renders the casting in sand moldsimpracticable.

It is a further object of the invention to so construct the sand moldthat precious metals may be molded therein.

It is a further object of the invention to provide a sand mold in whichthe entire mold is formed from sand.

2 The invention contemplates means for shapingv the sections from whichthe mold is formed and positioning the sections of the mold together toform a complete mold, the shape of the articles to be cast being formedin the mold by patterns.

With the above and other objects in view reference is had to theaccompanying drawings, in which Figure 1 is a top plan view of one ofthe mold sections;

Figure 2 is a top plan view of the other mold section;

Figure 3 is a detail sectional view showing the manner in which one halfof the mold is formed;

Figure 4 is a sectional view of the mold forming sections placedtogether showing the manner of making the mold with the models inposition therein;

Figure 5 is a detail sectional view of the mold and core before themetal has been poured thereinto and before the mold has been removedfrom the mold forming apparatus;

Figure 6 is a detail sectional view of the Serial No. 39,877.

complete mold after it has been removed from the forming apparatus;

Figure 7 is a detail perspective view of the model carrying arbor;

Figure 8 is a detail perspective view of a section of the mold;

Figure 9 is a sectional view showing the manner in which the mold isformed to cast flat articles such as medallions and the like;

Figure 10 is a detail sectional view of the mold after the same has beenformed and removed from the forming device;

Figure 11 is a detail sectional view of a modified form of theinvention, and

Figure 12 is a perspective View of a section of the mold used inconnection with the modified form.

In the preferred form of the invention the device comprises a base 11,and said base consists of a foundation for the mold forming elementsduring the building up of the mold and comprises a block of metal orother suitable material.

I In carrying out the invention a suitable semicircular member 12 isplaced upon the base with its flat side 13 in contact therewith. Thissemicircular member 12 has reduced semicircular extensions 14, and oneof said extensions let is flattened as at 15 and provided with sizeindicating indicia 16. Thesemicircular member is provided with spacedopenings 17 the purpose of which will. be hereinafter described. Adaptedto be mountedin each of the spaced openings 17 is an invertedcone-shaped member 18, each of which members has a reduced extension 19,by which it is positioned in its respective opening 17 The referencecharacter 20 designates one member of the mold forming device and in thepresent instance the member 20 is circular in form. It is to beunderstood, however, that these members may be square or of any otherdesired shape. The member 20 is provided at diametrically oppositepoints with notches 21, adapted to receive the reduced semicircular.extensions 14- of the member 12, and said member 12 is adapted to bepositioned within the con fines of the member 20, as shown in Figure 2.The member 20 is provided at diametrically opposite points at rightangles to the notches 21, with guides 22, and said guides are hollow, asindicated by the reference character 23, After the member 20 has beenassembled as described, it is packed with sand 24, as shown in Fig. 3.If the member 20 now be inverted the inverted cone-shaped members 18will be dislodged and will provide tapered pouring openings in the bodyof sand. In its inverted position the semi-cylindrical member 12 ismoved, thus leaving this half of the mold completed.

The reference character designates the other member of the formingdevice, and aid member 25 is provided with guides 6, which are in theform of pins, or the like, 27. These guides 26 are arran ed atdiametrically opposed points, and formed in the member 25 atdiametrically opposite points at right angles to the guides 26, arenotches 28. Carried by the member 25 are brackets 29, and pivotallymounted on said brackets 29 are levers 30, said levers being connectedby a bar or the like 81. The free end of each of these levers projectsto a point beyond the notches 28, for a purpose to be hereinafterdescribed.

The reference character 32 designates an arbor, and said arbor isadapted to carry the patterns or models 33 from which the castings areto be made. This arbor is provided near each of its ends with a re ducedportion 34, and each of said reduced portions 25 i is adapted to bereceived in its respective slot 28 heretofore mentioned. The ends ofeach reduced portion 3st is provided with an enlarged portion 35, andeach of said enlarged portions 35 is provided with an opening 36 adaptedto receive centering pins 37 which centering pins are carried by themember 25.

After the sand 24 has been packed in the member 22 and said member hasbeen inverted and the members 18 and 12 removed therefrom, the member 25is placed on top of the member 22 with the pins 27 of the member 25engaging their respective hollow portions of the guides 22 of themember:-

20, Before the member 25 has been placed on the member 22, however, thearbor 32 with the patterns or models 33, is placed in position on themember 20. After this has been done, sand 58 is packed within the member25, as shown in Figure l of the drawings. The entire device is nowinverted and the member 20 is removed, after which the two levers 30 arerocked about their pivotal points to disengage or remove the arbor 32.After the arbor 32 is removed, the sand core 39 is positioned in themember 25, after which the member 20 is placed thereon as shown inFigure 5. A block :40 is now engaged with the san 'l 38 in the member 25and the completed mold is forced from the members 20 and 25, as shown inFigure (5. It is now only necessary to pour the metal through thepouring opening formed by the inverted conical members 18.

In the present instance the device has been shown as capable of moldingtwo linger rings, but it is obvious that it may be so formed as to molda single finger ring or more as desired.

In order to properly position the patterns or molds on the arbor 32,said arbor is provided with markings -l0 which show the relativeposition between the models and the pouring openings formed in the mold.The arbor is further provided with size indicating indicia designated bythe reference character 32 in order that the proper sizes may be had.

In that form of the invention shown in liigures 9 and i0, the device isadapted for use in connection with flat work, such as medallions and thelike, and in this form of the invention the pattern or model, designatedby the reference character 43, is carried by a plate at, which isinterposed be tween the members 20 and 25. This plate is provided withan opening d5 adapted to receive the inverted cone-shaped member 18 inorder that a pouring hole may be pro vided. In this form of theinvention the member 25 is inverted with respect to the position inwhich it was shown in Figure 9, and the sand is packed upon the patternor model43, it being understood, of course, that the plate l i ispositioned to form a bottom for the member, 25. In this manner after theplate 44 and the inverted conicalshaped member 18 have been removed themold is forced from the members 20 and 25, as in the preferred form ofthe invention, and the mold as illustrated in Figure 10, is produced.

In the form of the invention shown in Figures 11 and 12, the device isadapted for use in pouring linger rings in which engraved designs areemployed on opposite sides of the plate and owing to the undercutportions of said designs must be poured in a different manner than isthe case with plain rings as in the preferred form of the invention. Inthe modified form of the invention. shown in Figures 11 and 1 2, thesemi-cylindrical member 12 is provided with projecting portions 46,which form pouring holes to the side in order that when the pattern ormodel is removed the same will freely come away from the sand and leavea clean impression therein.

From the foregoing it is apparent that the present invention provides anew and improved means for making molds for casting precious metal insand, and, at the same time, produces a device of this character whichis highly efficient and practicable.

I claim:

1. A device for forming molds comprising a base, a plurality of moldforming elements supported on said base, means for preventing shiftingmovement of one of said memiii hers relative to the other member, apattern carrying member interposed with respect to the two members andadapted to support patterns interiorly thereof, and means carried by oneof said members for elevating the pattern carrying member.

2. In a mold forming device, a base, a plurality of mold forming membersarranged in superimposed relation, means for preventing shiftingmovement of said mold forming members relative to one member, a patternsupporting member, means for preventing shifting movement of the patternsupporting member relative to the mold forming members, and meanscarried by one of the mold forming members for lifting the patternsupporting member, substantially as described.

3. In a mold forming device, a plurality of mold forming members adaptedfor interengagement with each other, means for supporting a patterncarrying member on one of said mold forming members, and a pivoted bailmounted on said last mentioned mold forming member and adapted to engagethe pattern carrying member to elevate the same relative to the moldforming member, substantially as described.

4:. In combination with a mold forming member, a pattern carrying membersupported thereby, and means for elevating said pattern. carrying memberwith respect to the mold forming member, and a mold formed therein, saidelevating means comprising a bail-like member pivotally mounted on themold forming member, said baillike members having extensions underlyingthe pattern carrying member.

GUSTAV A. HAUSHERR.

